Naval direction-finding tower MP 3

In 1943, in the northwestern corner of the Channel Island of Jersey, the German Navy built a Battery Observation Post called "Marine Peilstand und Meßstellung 3".

Bunker MP3 was intended to be part of a network comprising nine bunkers. These were to be placed around the entire island to observe hostile ships. Using readings from just two of these Observation Posts, bearing and range could be accurately and quickly calculated and then passed to the various gun batteries on the island.